JPH0655232A - Punching machine - Google Patents

Abstract

PURPOSE:To execute the downsizing and the weight saving of a punching machine by providing a cam mechanism to perform the punching action on a die head, and providing a cam mechanism driving device on a machine body. CONSTITUTION:In a punching machine where punching is executed by bringing at least one of a pair of dies P, D close to the other die, and die heads 21, 23 provided with the dies P, D are constituted to be positioned in a movable manner relative to a work W, cam mechanisms C to execute the punching action of the dies P, D are mounted on the die heads 21, 23, and cam mechanism driving devices M to drive the cam mechanisms C are mounted on punching machine bodies 11, 13/ This arrangement allows the downsizing and the weight saving of the relevant members which are moved to be positioned in an integrated manner with the die head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching machine, and more particularly, to a punching machine which is constructed so that a die head having a die can be positioned and moved with respect to a work.

[0002]

2. Description of the Related Art A conventional punching machine constructed so that a die head having a die attached thereto can be positioned and moved with respect to a work is used for a punching operation on a die head on which punching is performed. The one with a cylinder and striker attached is widely used. In order to obtain a sufficient punching force, the related members such as the punching operation cylinder are large in shape and weight.

[0003]

In the punching machine having such a structure, the punching operation cylinder, hydraulic hose, flywheel, and other punching-related members must be moved together for positioning together with the die head. Since it is a structure that does not occur, the mold head moving mechanism is large in both shape and strength, and the equipment space occupied by the positioning movement of the punching-related member is required to be considerably wide.

In addition, it is necessary to have a large driving power for driving the mold head moving mechanism having a large shape and weight, and the moving operation of a long hydraulic hose has a problem such as entanglement and is safe. In addition, the positioning movement speed must be low.

The object of the present invention was proposed in view of the above problems of the conventional punching machine, and the punching-related member for positioning and moving integrally with the die head is small and sufficiently lightweight. To provide.

[0006]

In order to solve the above problems, according to the present invention, at least one mold of a pair of molds is brought into proximity with the other mold to perform a punching operation, thereby performing processing. A punching machine configured so that a die head equipped with a die can be positioned and moved with respect to a work, wherein a cam mechanism for performing the punching operation of the die is provided on the die head, and a cam is provided. It is characterized in that a cam mechanism driving device for driving the mechanism is provided in the processing machine main body.

[0007]

Since the cam mechanism for punching the die is provided in the die head and the cam mechanism driving device for driving the cam mechanism is provided in the main body of the processing machine, the shape and weight of the die head and the cam mechanism are provided. Can be made sufficiently small and lightweight, and the equipment space required for positioning and moving the mold head becomes small.

Since the cam mechanism is sufficiently small and lightweight,
The driving power for driving the cam mechanism driving device may be small, and the positioning movement speed can be high.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a first embodiment in which the present invention is applied to a horizontal punching machine in which a work W is processed in a horizontal posture, and FIG. 2 is taken along line II-II in FIG. FIG. The punching machine of the illustrated example has a carriage slider 5 guided and moved in the X-axis direction by a linear guide 3 provided on the frame 1.

The carriage slider 5 is provided with a plurality of work clamps 7. The work clamps 7 hold the work W along the horizontal work path line PL of FIG. Is a structure which is moved in the X-axis direction by meshing with a pinion (not shown) linked to the X-axis motor 9 by a rack (not shown) provided on the lower bottom.

The frame 1 is provided with a gate-shaped frame 11.
The frame 1 is mounted so as to straddle the frame 1 in the Y-axis direction.
A lower frame 13 shown in FIG. 2 is provided below the gate frame 11 inside.

Punch guides 15 and 15 and die guides 17 and 17 which are long in the Y-axis direction are attached to the gate-shaped frame 11 and the lower frame 13 to form a mold head 19. The punch head 21 and the die head 23 are movably provided in the Y-axis direction by the punch head 21 by the punch guides 15 and 15, and the die head 23 by the die guides 17, 17. To move the punch head 21 and the die head 23 in the Y-axis direction, the head moving screws 29 and 31 which are long in the Y-axis direction and which are screwed into the nut portions 25 and 27 of the punch head 21 and the die head 23 are used. -By rotating with the motor 33, 35.

The punch head 21 and the die head 23 are the work
The punch head 21 is provided with an upper hitting element 22 movably up and down, and the die head 23 is provided with a lower hitting element 24 movably up and down. The upper striker 22 has an upper die P such as a punch.
However, the lower impactor 24 is equipped with a lower die D such as a die via respective die supporting devices not shown, and the upper impactor 22 and the lower impactor 22 are provided by a known die exchanging device not shown. 24 desired upper mold P, lower mold D
Is automatically selected and equipped.

Then, in this embodiment, the upper die P is moved up and down to perform a punching operation with the lower die D, or the lower die D is moved up and down to move between the upper die P and the upper die P. In order to perform the punching operation in step 1, the punch head 21 and the die head 23 are each provided with a cam mechanism C.

Further, a cam mechanism driving device M for driving each of the cam mechanisms C, C is provided on the gate-shaped frame 11 and the lower frame 13 which are the main bodies of the respective processing machines.

The cam mechanism C and the cam mechanism driving device M will be described as a representative of the punch head 21. FIG. 3 is a view in the direction of arrow III in FIG. 1, and FIG. 4 is an enlarged view of a main part of FIG.

The cam mechanism driving device M in the illustrated example is supported by the portal frame 11 and is long in the Y-axis direction.
And a pinion 39 attached to the spline shaft 37, a rack 41 meshing with the pinion 39, and a rack 41.
The punching cylinder 43 is mounted on the portal frame 11 for axial movement, and the piston rod 45 of the punching cylinder 43 has a rack 41.
Are linked to.

The cam mechanism C in the illustrated example has a spline shaft 37.
The spline boss 4 which is concentric with the spline
7, an eccentric boss portion 49 fitted to the spline boss portion 47 and eccentric with respect to the spline boss portion 47,
A tip portion is pivotally supported and connected to the upper striker 22 by a pin 51, and a base portion is constituted by an arm 53 rotatably fitted to the exemboss portion 49. Moreover, the arm 5
The circular hole 55 of No. 3 is fitted on the eccentric boss portion 49.

With the above construction, when the piston rod 45 of the punching cylinder 43 of the cam mechanism driving device M is moved in and out, the pinion 39 meshing with the rack 41 is rotated to rotate the spline shaft 37, and the spline boss portion 47 and the eccentric boss. The part 49 rotates to move the arm 53 up and down, the upper striker 22 is guided by the fitting hole 57 of the punch head 21 to move up and down, and the upper die P moves downward to move the lower die D. A punching operation is performed between them. Similarly, when the piston rod 45 of the punching cylinder 43 of the cam mechanism driving device M of the die head 23 is moved in and out, the lower die D moves upward together with the lower striker 24 and the punching operation with the upper die P is performed. It is done.

By rotating the head moving motors 33 and 35, the head moving screws 29 and 31 are rotated and the punch head 21 and the die head 23 are respectively positioned and moved in the Y-axis direction.

The work W whose one side is gripped by the work clamp 7 is supported by a work table device 61 provided on the frame 1 to move the carriage slider 5 in the X-axis direction. Transferred with it. The illustrated work table device 61 has a structure in which a large number of endless work support belts 63 having a narrow width arranged in the Y-axis direction are rotated in the X-axis direction.

As shown in FIG. 2, the work support belt 63
Is divided into a left-side path portion 63L and a right-side path portion 63R that sandwich the die head 23 from the left and right, and the pulleys 65, 67, 69, 71 and the pulleys 73, 7 are separated.
5, 77, 79 in this order, the pulleys 65, 67 of the left side passage portion 63L are pivotally supported by the pulley support member 81, and the pulleys 73, 75 of the right side passage portion 63R are pulled. -The tension spring 8 is pivotally supported by the release support member 83.
5 and 87 are properly stretched, and the lifting cylinder device 8
9 and 91 depending on the left side route portion 63L and the right side route portion 63R
The vertical position of is matched with the work path line PL. The work support belt 63 is provided on the drive shaft 9 of the pulley 75.
It is rotated by a supporting belt drive motor 95 connected to the motor 3.

Next, the operation of the above embodiment will be described. When one side of the work W to be processed is gripped by the work clamp 7 and set on the carriage slider 5, the work W is
Is supported by one of the left side passage portion 63L and the right side passage portion 63R of the work support belt 63, or by both of them at a height that matches the work pass line PL.

The X-axis motor 9 is driven to move the carriage slider 5 in the X-axis direction, and the support belt drive motor is driven.
When the work 95 is driven, each work support belt 63 is rotated in the same direction as the carriage slider 5 at the same speed, and the work W is smoothly transferred with little resistance.

Further, the head moving motors 33 and 35 are driven to rotate the head moving screws 29 and 31 to position and move the punch head 21 and the die head 23 to predetermined positions in the Y-axis direction. As a result, a predetermined portion of the work W is positioned at a predetermined position above the lower mold D and below the upper mold P.

Then, for example, when the piston rod 45 of the punching cylinder 43 of the cam mechanism driving device M on the punch head 21 side is operated, the pinion 39 and the spline shaft 37 meshing with the rack 41 are rotated, and the spline boss portion 4 is rotated.
7 and the eccentric boss 49 rotate to move the arm 53 downward, and the upper striker 22 and the upper mold P move downward to form a stationary process such as punching between the lower mold D and the lower mold D. Is done. By operating the piston rod 45 of the punching cylinder 43 of the cam mechanism driving device M on the die head 23 side,
The arm 53 on the die head 23 side is moved upward, and the lower striker 2
It is also possible to perform a molding process between the upper mold 4 and the upper mold D which is stationary by moving the lower mold 4 upward.

The cam mechanism C for punching the upper die P and the lower die D in this way is provided in the die head, and the cam mechanism driving device M for driving the cam mechanism C is the gate of each processing machine. Since the shape frame 11 and the lower frame 13 are provided, the shapes and weights of punching-related members such as the punch head 21 and the die head 23, and the cam mechanism C.
Can be made sufficiently small and lightweight, and the equipment space required for the positioning movement of the punch head 21 and the die head 23 can be small.

Since the cam mechanism C is sufficiently small and lightweight, the driving power of the punching cylinder 43 for driving the cam mechanism drive M is small, and the cam mechanism C is also small and lightweight. Therefore, the positioning movement speed of the punch head 21 and the die head 23 can be made high, and the work efficiency is improved.

Like a conventional punching machine in which a punching cylinder and a striker are attached to a punching head and a die head, related members such as a punching cylinder having a large shape and weight, a hydraulic hose, a flywheel, etc. Since it is a structure for positioning and moving integrally, the mold head moving mechanism has to be large in both shape and strength, and the equipment space occupied by the positioning movement of the above-mentioned related members also needs to be quite wide. And moreover,
This embodiment solves the above-mentioned conventional problem that the driving power for driving the mold head moving mechanism, which has a large shape and weight, becomes large, and the positioning moving speed must be low for safety. To be done.

FIG. 5 is a perspective view showing a second embodiment in which the present invention is applied to a vertical punching machine for working the work W in a vertical posture. The punching machine shown is
Left frame 103 on the left and right sides of the gate frame 101
And the right frame 105 are extended, and the left frame 10
3, guide rails 107, 1 on the right frame 105
07 is extended in the X-axis direction. This guide rail 1
07 and 107 are provided with a left side carriage 113 and a right side carriage 115, which are members of the plate material conveying device 111, which are provided so as to be able to move toward and away from each other by a plurality of parallel rods 109 so as to be movable in the X-axis direction. The left side carriage 113 and the right side carriage 115 are, for example, drive motors,
It can be moved in the X-axis direction in the gate-shaped frame 101 by a ball screw or the like. A plurality of work clamps 117 are provided above and below the left carriage 113 and the right carriage 115.
This work clamp 117 holds the work W in a vertical posture along the vertical work path line PL in FIG.

Front frame 101 of portal frame 101
A punch guide and a die guide (not shown), which are long in the Y-axis direction, are attached to each of the F and the rear frame 101R, and the punch head 12 constituting the die head 119 is formed.
1 and a die head 123 are provided movably in the Y-axis direction by a punch guide and a die guide. The movement of the punch head 121 and the die head 123 in the Y-axis direction drives the head moving motors 133 and 135 with a transmission to rotate the head moving screws 129 and 131, as in the first embodiment shown in FIG. Done by.

The punch head 121 and the die head 123 face each other vertically across the work path line PL, and the punch head 121 is equipped with a front die such as a punch movably in the Y-axis direction via a striker. The die head 123 is equipped with a rear die such as a die so as to be movable in the Y-axis direction via a striker.

Cam mechanisms C and C having the same structure as those of the first embodiment for performing punching operations of the front mold and the rear mold.
Are provided on the punch head 121 and the die head 123 respectively, and the cam mechanism driving devices M and M having the same structure as those of the first embodiment for driving the cam mechanisms C and C, respectively.
Are provided on the front frame 101F and the rear frame 101R of the portal frame 101 which is the main body of each processing machine.

Also in this second embodiment, a cam mechanism C for punching the front die and the rear die is provided in the die head,
The cam mechanism driving device M for driving the cam mechanism C is a front frame 1 of a portal frame 101 which is a main body of each processing machine.
01F and the rear frame 101R, the punch head 121, the die head 123 side shape and weight, and the cam mechanism C can be made sufficiently small and lightweight. The equipment space required for the positioning movement of 123 is small, and since the cam mechanism C is sufficiently small and lightweight, the driving power of the punching cylinder 137 for driving the cam mechanism driving device M is small. Since the cam mechanism C is small and lightweight, the punch head 121 and the die head 123 can be positioned at high speed, and the working efficiency is improved. is doing.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. For example, upper and lower molds,
The cam mechanism C for performing the punching operation of the front and rear molds and the cam mechanism driving device M are the eccentric bosses. Arm structure and rack. It is not limited to the pinion mechanism, and various known structures can be used without any trouble. .

For example, as illustrated in FIG. 6, a ram 155 is mounted on a processing machine body 151 of a punching machine via a parallel link mechanism 153, and an operating rod 156 of the parallel link mechanism 153 is connected to a piston of a punching cylinder 157. For example, the upper striking element 122 of the punch head 161 is connected to the rod 159 to face the upper striking element 122 of the punch head 161, thereby forming a cam mechanism driving device M. The mechanism C may be configured so that the parallel link mechanism 153 moves the ram 155 downward by the projecting operation of the piston rod 159 to perform the punching operation of the upper die P together with the upper hitting element 122.

Alternatively, as illustrated in FIG. 7, a plurality of rollers 165 are pivotally supported on the main body 151 of the processing machine, and a plurality of wedge portions 169 are formed on the die pressing body 167 connected to the piston rod 159 of the punching cylinder 157. Forming wedge portion 169
Facing the roller 165 of the main body 151 of the processing machine, and for example, the punch head 161 is attached to the ram 171 which can be moved only up and down.
The upper striking element 122 is made to face each other to form a cam mechanism driving device M, and the upper striking element 122 is held at a non-punching position by a spring 163 to form a cam mechanism C. The wedge portion 169 contacting the la 165 moves down the mold pressing body 167 to move the ram 17
1 may be configured to perform the punching operation of the upper die P together with the upper striker 122.

In the horizontal punching machine, only one of the upper die and the lower die, or in the vertical punching machine, only one of the front die and the rear die punches. The present invention can be applied to any punching machine configured as above without any trouble.

[0039]

As described above, according to the present invention, the cam mechanism for punching the die is provided in the die head, and the cam mechanism driving device for driving the cam mechanism is provided in the main body of the processing machine. The shape and weight of the mold head and the cam mechanism can be sufficiently small and lightweight, and the equipment space required for positioning and moving the mold head can be small.

Since the cam mechanism is sufficiently small and lightweight,
The driving power for driving the cam mechanism driving device may be small, and the positioning movement speed can be high.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a punching machine of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a view on arrow III in FIG.

FIG. 4 is an enlarged view of a main part of FIG.

FIG. 5 is a perspective view showing a second embodiment of the punching machine of the present invention.

FIG. 6 is an explanatory diagram showing a main part of a third embodiment of the punching machine of the present invention.

FIG. 7 is an explanatory diagram showing a main part of a fourth embodiment of the punching machine of the present invention.

[Explanation of symbols]

 11 Gate-shaped frame (processing machine main body) 13 Lower frame (processing machine main body) 19, 119 Mold head 101F Front frame (processing machine main body) 101R Rear frame (processing machine main body) 151 Processing Machine main body P Upper mold, Front mold D Lower mold, Rear mold C Cam mechanism M Cam mechanism drive device

Claims (1)

[Claims] 1. A mold head is equipped with a mold head for work, wherein at least one mold of a pair of molds is brought into proximity with the other mold and punching operation is performed. A punching machine configured to be capable of positioning and moving, wherein a cam mechanism for performing the punching operation of a mold is provided on a mold head, and a cam mechanism driving device for driving the cam mechanism is provided on a machine body. A punching machine characterized by that.